Check valve



Sept. 27, 1932. w. A. BUEHLER CHECK VALVE Filed March 26, 1931 permit the liquid or material Patented Sept. 27, 1932 UNITED STATES WALTER A. BUEHLER, or cUcAMoneli, CALIFORNIA CHECK ALVE,"

Application filed March 26,1931. 'Seria1No. 5 25,51 3i q This invention relates to check valves and more particularly to a check valve which is adapted to be submerged or disposed within I a storage tank or other receptacle.

An object of this invention is to provide in a check valve means by which the valve may be readily removed or withdrawn from the tank or receptacle within which it is mounted, without the necessity of entering the tank or receptacle for removing the valve.

Another object of this invention is to provide a valve of this kind with means by which the valve will not become lost after it has been loosened or unthreaded from the tank or pipe connection.

The above and various other objects and advantages of this invention will in part be described in and in part be understood from the following detailed description of the pres-' ent preferred embodiment, the same being illustrated in the accompanying drawing, wherein Figure 1 is a detail fragmentary side elevation partly cut away of a pair of tanks connected together and having a check valve constructed according to the preferred embodiment of this invention mounted on the connecting means;

Figure 2 is an enlarged longitudinal sectional view of the check valve, and

Figure 3 is a top plan view of the valve.

Referring to the drawing wherein like numerals of reference designate corresponding parts throughout the several views, the numeral 10 designates generally a storage tank, and the numeral 11 designates a pressure tank which is disposed beneath orin spaced relation to the storage tank 10, being held in spaced relation to the tank 10 by means of straps or supporting members 13.

The storage tank 10 is provided with an intake port 12 and a pipe connection 14 connects the storage tank 10 with the pressure tank 11, this pi e connection 14 being disposed sub stantially in alinement with the intake port or opening 12. A check valve generally designated as 15 is connected to the pipe ltand disposed within the interior of the storage tank 10, this check valve 15 being adapted to within the storage tank 10 to pass downwardly r outwardly thereof into the pressuretank'll. pf This check valve '15 comprisesfaca sing or housing 16 which is preferably madeof cast metal havingl'an outlet port-l'F-at one end thereof and an intake port 18 in one'side of the housing 16, which intake port l 8lis closed by a gravity operated valve member 1 9; The

upper portionof the valve casing 16 'is'pro vided with a square or angular head 20 about which a wrench may be disposed so as to tighten or loosen the housing 16 on thecon necting pipe 1 1. This square head 20 is pref: erably coaxial withthe threaded outlet port 17,, and a'threaded bore 21 is provided in the head portion "20 extending'do'wnwardly from the upper surface thereof. I

-A rod or the like 22 is adapted to be threadedinto the opening 21, and may be extended through-theintake port 12 of the storage tank 10. "Through the use of the inserted member 22, when it is desired to remove'or positionv the'hou'sing' '16 on the connecting pipe 14, the housing will not be lost within the storage tank 10.

In the use of this check valve 15, when it is desired to connect or mount the valve on the i connecting pipe 14, the nut portion 20 of the valve may be engaged by a suitable wrench and the inserted member on the housing 16 so that the housing 16 will not drop off of the wrench when it is inserted through the intake port necting pipe 14, the wrench maybe removed from the nut portion 20 and the inserted member 22 extended outwardly of the storage tank 10, so that when it is desired at a later date to remove the check valve 15, the wrench may be re-inserted about the nut 20 and the 22 may be retained inserted or removed' tank 10 without the 12. After the casing 16 has been properly threaded onto the conabove specifically described embodiment of this invention Without departing from the spirit thereof, such changes and modifications being restricted only by the scope of the following claims.

I claim 1-. A- check valve of the character described comprising a casing having a threaded outlet port in one end thereof and an intake port in 10 one side, a gravity operated valve member mounted in the casing and controlling the passage of liquid through the casing in one direction, the end of the casing opposite the outlet port being closed, a nut member upstanding from the closed end of the casing and; integrally formed therewith, said nut member having athreaded bore therein, and a rod inserted in the threaded bore whereby to facilitate removal of the casing'from a closed receptacle upon application of a Wrench to said nut; p 1 2. A-check valve of the character described comprising anelongated cylindrical casing having one end thereof closed and the oppow site end provided with a threaded outlet port, said casing also having an intake port in the side thereof, a gravity operated valve controlling the passage of fluid through the casing in one direction, a nut integrally formed with the closed end of the casing, said nut having an axially threaded bore therein, and a threaded member fixedly positioned in said threaded bore whereby to facilitate removal of the casing from a point remote therefrom following application of a wrench'to said nut. In testimony whereof I hereunto afliX my signature.

WALTER A. BUEHLER. 

